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Exercise "The past perfect continuous", created by anonyme (a free exercise to learn English):
Results of the 26 545 people who have taken this test:
Average mark: 46.5 / 100 Share
Latest member with a 100/100 (perfect mark): wentano / RUSSIA, on Friday 24 June - 23:40:
"It's a really good test!! Thanks a lot"
They got a perfect mark
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